Electrical Notes: Comprehensive Electrical Engineering Reference

Electrical Notes
Revision-4: 1.7.2016
Jignesh.Parmar
www.electricalnotes.wordpress.com
Note: All Notes/Abstract s are based on some electrical References. All References are mentions at the end of Note.

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: INDEX:
Part-1 :Electrical Quick Data Reference:
Chapter
Description
Page No
1
Measuring Units
7
2
Electrical Equation
8
3
Electrical Thumb Rules
10
4
Electrical Cable & Overhead Line Bare Conductor Current Rating
12
Electrical Quick Reference
5
Electrical Quick Reference for Electrical Costing per square Meter
21
6
Electrical Quick Reference for Electrical Voltage Limit
23
7
Electrical Quick Reference for D.G set
29
8
Electrical Quick Reference for HVAC
32
9
Electrical Quick Reference for Earthing Conductor / Wire
34
10
Electrical Quick Reference for Transformer
39
11
Electrical Quick Reference for Capacitor
45
12
Electrical Quick Reference for Cable Gland
48
13
Electrical Quick Reference for Current Transformer
50
14
Electrical Quick Reference for Demand Factor-Diversity Factor
52
15
Electrical Quick Reference for illuminance Level
55
16
Electrical Quick Reference for IP Standard
62
17
Electrical Quick Reference Motor
63
18
Electrical Quick Reference O/L Relay , Contactor for Starter
65
19
Electrical Quick Reference for Motor Terminal Connections
76
Electrical Safety Clearance
20
Electrical Safety Clearances-Qatar General Electricity
78
21
Electrical Safety Clearances-Indian Electricity Rules
80
22
Electrical Safety Clearances-Northern Ireland Electricity (NIE)
83
23
Electrical Safety Clearances-ETSA Utilities / British Standard
86
24
Electrical Safety Clearances-UK Power Networks
87
25
Electrical Safety Clearances-New Zealand Electrical Code (NZECP)
88
26
Electrical Safety Clearances-Western Power Company
90
27
Electrical Safety Clearance for Electrical Panel
91
28
Electrical Safety Clearance for Transformer.
93
29
Electrical Safety Clearance for Sub Station Equipment’s
95
30
Typical Values of Sub Station Electrical Equipment‘s.
100
31
Minimum Acceptable Specification of CT for Metering
104
32
Insulation Resistance (IR) Values
106
33
Standard Makes & IS code for Electrical Equipment‘s
117

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Abstract of Electrical Standard
34
Abstract of CPWD In Internal Electrification Work
120
35
Abstract of IE Rules for DP Structure
125
36
Abstract of IS: 3043 Code for Earthing Practice
127
37
Abstract of IS:5039 for Distribution Pillars (<1KV AC & DC)
128
38
Abstract IS: 694 / IS:1554 / IS: 11892 for Cable
130
39
Abstract IS:15652 for Insulating Mat
132
Abstract IS: 11171 for Transformer
40
Abstract IS: 1678 / IS:1445
133
41
Abstract IS: 1255 for Cable Rote &Laying Method of Cable
134
42
Abstract IS: 5613 for HV Line
136
43
Abstract of Indian Electricity Rules (IE Rules)
141

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Part-2 :Electrical Calculation:
Chapter
Description
Page No
44
Calculate Number of Earthing Pits for System
145
45
Calculate Size of Cable for Motor as per National Electrical Code
151
46
Calculate Transformer Protection as per National Electrical Code
153
47
Calculate over current Protection of Transformer (NEC 450.3)
154
48
Calculate Size of Contactor, Fuse, C.B, O/L Relay of DOL Starter
160
49
Calculate Size of Contactor, Fuse, C.B, O/L Relay of Star-Delta Starter
162
50
Calculate Transformer Size & Voltage Drop due to starting of Single Large
Motor
165
51
Calculate TC Size & Voltage Drop due to starting of multiple no of Motors
166
52
Calculate Voltage Regulation for 11KV, 22KV, 33KV Overhead Line ( REC)
167
53
Calculation Technical Losses of Distribution Line
170
54
Calculate Cable Size and Voltage Drop of HT / LV Cable
172
55
Calculate IDMT over Current Relay Setting (50/51)
175
56
Calculate Size of Capacitor Bank / Annual Saving & Payback Period
177
57
Calculate No of Street Light Pole
180
58
Calculate No of Lighting Fixtures / Lumens for Indoor Lighting
182
59
Calculate Street Light Pole Distance &Watt Area
183
60
Calculate Short Circuit Current (Isc)
184
61
Calculate Size of Bus bar for Panel
189
62
Calculate Size of Cable Tray
193
63
Calculate Size of Diesel Generator Set
195
64
Calculate Size of Main ELCB & Branch MCB of Distribution Box
198
65
Calculate Size of Solar Panels
203
66
Calculate Size of Inverter & Battery Bank
205
67
Calculate Cable Trunking Size
209
68
Calculate Size of Conduit for Cables / Wires
210
69
Calculate Cable Voltage Drop for Street Light Pole
211
70
Calculate Lighting Protection for Building / Structure
214

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Part-3 : Electrical Notes:
Chapter
Description
Page No
71
Direct On Line Starter
218
72
Star-Delta Starter
222
73
Motor Number Plate Terminology
228
74
Three Phase Transformer Connection
230
75
Vector Group of Transformer
245
76
Difference between Power Transformer & Distribution Transformer
258
77
Parallel Operation of Transformers
259
78
Various Routine Test of Transformer
266
79
Standard Transformer Accessories & Fittings
280
80
Selection of Lighting Luminaries
294
81
Different Type of Lamps and Control Gear
308
82
What is Earthing
322
83
Difference between Bonding, Grounding and Earthing
327
84
Difference between Unearthed & Earthed Cables
330
85
Low Voltage and High Voltage Cable Testing
332
86
EHV/HV Cable Sheath Earthing
335
87
HIPOT Testing
343
88
Working Principle of ELCB / RCCB
346
89
Difference between MCB-MCCB-ELCB-RCBO-RCCB
350
90
Type of MCB & Distribution Board
353
91
Electrical Questions & Answers
357
92
Type and Specification of Fuse
380
93
Basic of Current transformers
393
94
Lighting Arrestor
409
95
Cable Tray
418
96
Cable Glands
422
97
Vibration Damper in Transmission Line
426
98
What is Ferranti Effect
429
99
What is Corona Effect
431
100
Harmonics and its Effects
439
101
What is Demand Factor-Diversity Factor-Utilization Factor-Load Factor
449
102
Guideline of Design Electrical Network for Building / Small Area.
458
103
Type-Size- Location of Capacitor in Electrical System
460
104
Types of Overhead Conductors
469
105
What is Power Factor
477
106
11KV/415V over Head Line‘s Specification as per REC
484
107
Analysis the Truth behind Household Power Savers
497